From: Michal Krol Date: Sun, 20 Dec 2009 12:50:16 +0000 (+0100) Subject: glsl/pp: Do processing inline with tokenisation. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d696cb279d80ccddebcb28ef6b6284bc6bb9430f;p=mesa.git glsl/pp: Do processing inline with tokenisation. --- diff --git a/src/glsl/pp/sl_pp_context.c b/src/glsl/pp/sl_pp_context.c index 2ce50790313..c1cef41bceb 100644 --- a/src/glsl/pp/sl_pp_context.c +++ b/src/glsl/pp/sl_pp_context.c @@ -32,7 +32,8 @@ struct sl_pp_context * -sl_pp_context_create(void) +sl_pp_context_create(const char *input, + const struct sl_pp_purify_options *options) { struct sl_pp_context *context; @@ -46,12 +47,18 @@ sl_pp_context_create(void) return NULL; } - context->getc_buf = malloc(64 * sizeof(char)); + context->getc_buf_capacity = 64; + context->getc_buf = malloc(context->getc_buf_capacity * sizeof(char)); if (!context->getc_buf) { sl_pp_context_destroy(context); return NULL; } + if (sl_pp_token_buffer_init(&context->tokens, context)) { + sl_pp_context_destroy(context); + return NULL; + } + context->macro_tail = &context->macro; context->if_ptr = SL_PP_MAX_IF_NESTING; context->if_value = 1; @@ -60,6 +67,8 @@ sl_pp_context_create(void) context->line = 1; context->file = 0; + sl_pp_purify_state_init(&context->pure, input, options); + return context; } @@ -70,6 +79,7 @@ sl_pp_context_destroy(struct sl_pp_context *context) free(context->cstr_pool); sl_pp_macro_free(context->macro); free(context->getc_buf); + sl_pp_token_buffer_destroy(&context->tokens); free(context); } } diff --git a/src/glsl/pp/sl_pp_context.h b/src/glsl/pp/sl_pp_context.h index fa939143e9a..5e1c5630483 100644 --- a/src/glsl/pp/sl_pp_context.h +++ b/src/glsl/pp/sl_pp_context.h @@ -31,6 +31,7 @@ #include "sl_pp_dict.h" #include "sl_pp_macro.h" #include "sl_pp_purify.h" +#include "sl_pp_token_util.h" #define SL_PP_MAX_IF_NESTING 64 @@ -81,6 +82,8 @@ struct sl_pp_context { char *getc_buf; unsigned int getc_buf_size; unsigned int getc_buf_capacity; + + struct sl_pp_token_buffer tokens; }; #endif /* SL_PP_CONTEXT_H */ diff --git a/src/glsl/pp/sl_pp_if.c b/src/glsl/pp/sl_pp_if.c index 6610bc69f3c..f12f0f142c6 100644 --- a/src/glsl/pp/sl_pp_if.c +++ b/src/glsl/pp/sl_pp_if.c @@ -31,55 +31,50 @@ #include "sl_pp_process.h" -static void -skip_whitespace(const struct sl_pp_token_info *input, - unsigned int *pi) -{ - while (input[*pi].token == SL_PP_WHITESPACE) { - (*pi)++; - } -} - static int _parse_defined(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int *pi, + struct sl_pp_token_buffer *buffer, struct sl_pp_process_state *state) { + struct sl_pp_token_info input; int parens = 0; int macro_name; struct sl_pp_macro *macro; int defined = 0; struct sl_pp_token_info result; - skip_whitespace(input, pi); - if (input[*pi].token == SL_PP_LPAREN) { - (*pi)++; - skip_whitespace(input, pi); + if (sl_pp_token_buffer_skip_white(buffer, &input)) { + return -1; + } + + if (input.token == SL_PP_LPAREN) { + if (sl_pp_token_buffer_skip_white(buffer, &input)) { + return -1; + } parens = 1; } - if (input[*pi].token != SL_PP_IDENTIFIER) { + if (input.token != SL_PP_IDENTIFIER) { strcpy(context->error_msg, "expected an identifier"); return -1; } - macro_name = input[*pi].data.identifier; + macro_name = input.data.identifier; for (macro = context->macro; macro; macro = macro->next) { if (macro->name == macro_name) { defined = 1; break; } } - (*pi)++; if (parens) { - skip_whitespace(input, pi); - if (input[*pi].token != SL_PP_RPAREN) { + if (sl_pp_token_buffer_skip_white(buffer, &input)) { + return -1; + } + if (input.token != SL_PP_RPAREN) { strcpy(context->error_msg, "expected `)'"); return -1; } - (*pi)++; } result.token = SL_PP_UINT; @@ -108,12 +103,10 @@ _evaluate_if_stack(struct sl_pp_context *context) static int _parse_if(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last) + struct sl_pp_token_buffer *buffer) { - unsigned int i; struct sl_pp_process_state state; + int found_end = 0; struct sl_pp_token_info eof; int result; @@ -123,34 +116,40 @@ _parse_if(struct sl_pp_context *context, } memset(&state, 0, sizeof(state)); - for (i = first; i < last;) { - switch (input[i].token) { + while (!found_end) { + struct sl_pp_token_info input; + + sl_pp_token_buffer_get(buffer, &input); + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_IDENTIFIER: - if (input[i].data.identifier == context->dict.defined) { - i++; - if (_parse_defined(context, input, &i, &state)) { + if (input.data.identifier == context->dict.defined) { + if (_parse_defined(context, buffer, &state)) { free(state.out); return -1; } } else { - if (sl_pp_macro_expand(context, input, &i, NULL, &state, sl_pp_macro_expand_unknown_to_0)) { + sl_pp_token_buffer_unget(buffer, &input); + if (sl_pp_macro_expand(context, buffer, NULL, &state, sl_pp_macro_expand_unknown_to_0)) { free(state.out); return -1; } } break; + case SL_PP_NEWLINE: + case SL_PP_EOF: + found_end = 1; + break; + default: - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); free(state.out); return -1; } - i++; } } @@ -198,11 +197,9 @@ _parse_else(struct sl_pp_context *context) int sl_pp_process_if(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last) + struct sl_pp_token_buffer *buffer) { - return _parse_if(context, input, first, last); + return _parse_if(context, buffer); } int @@ -301,9 +298,7 @@ sl_pp_process_ifndef(struct sl_pp_context *context, int sl_pp_process_elif(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last) + struct sl_pp_token_buffer *buffer) { if (_parse_else(context)) { return -1; @@ -311,7 +306,7 @@ sl_pp_process_elif(struct sl_pp_context *context, if (context->if_stack[context->if_ptr] & 1) { context->if_ptr++; - if (_parse_if(context, input, first, last)) { + if (_parse_if(context, buffer)) { return -1; } } diff --git a/src/glsl/pp/sl_pp_line.c b/src/glsl/pp/sl_pp_line.c index ed5acc697ce..87987fc2baf 100644 --- a/src/glsl/pp/sl_pp_line.c +++ b/src/glsl/pp/sl_pp_line.c @@ -33,39 +33,44 @@ int sl_pp_process_line(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last, + struct sl_pp_token_buffer *buffer, struct sl_pp_process_state *pstate) { - unsigned int i; struct sl_pp_process_state state; + int found_end = 0; int line_number = -1; int file_number = -1; unsigned int line; unsigned int file; memset(&state, 0, sizeof(state)); - for (i = first; i < last;) { - switch (input[i].token) { + while (!found_end) { + struct sl_pp_token_info input; + + sl_pp_token_buffer_get(buffer, &input); + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_IDENTIFIER: - if (sl_pp_macro_expand(context, input, &i, NULL, &state, sl_pp_macro_expand_normal)) { + sl_pp_token_buffer_unget(buffer, &input); + if (sl_pp_macro_expand(context, buffer, NULL, &state, sl_pp_macro_expand_normal)) { free(state.out); return -1; } break; + case SL_PP_NEWLINE: + case SL_PP_EOF: + found_end = 1; + break; + default: - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); free(state.out); return -1; } - i++; } } diff --git a/src/glsl/pp/sl_pp_macro.c b/src/glsl/pp/sl_pp_macro.c index 335142fc615..c98ab6559a6 100644 --- a/src/glsl/pp/sl_pp_macro.c +++ b/src/glsl/pp/sl_pp_macro.c @@ -88,15 +88,6 @@ sl_pp_macro_reset(struct sl_pp_macro *macro) _macro_init(macro); } -static void -skip_whitespace(const struct sl_pp_token_info *input, - unsigned int *pi) -{ - while (input[*pi].token == SL_PP_WHITESPACE) { - (*pi)++; - } -} - static int _out_number(struct sl_pp_context *context, struct sl_pp_process_state *state, @@ -119,24 +110,28 @@ _out_number(struct sl_pp_context *context, int sl_pp_macro_expand(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int *pi, + struct sl_pp_token_buffer *tokens, struct sl_pp_macro *local, struct sl_pp_process_state *state, enum sl_pp_macro_expand_behaviour behaviour) { int mute = (behaviour == sl_pp_macro_expand_mute); + struct sl_pp_token_info input; int macro_name; struct sl_pp_macro *macro = NULL; struct sl_pp_macro *actual_arg = NULL; unsigned int j; - if (input[*pi].token != SL_PP_IDENTIFIER) { + if (sl_pp_token_buffer_get(tokens, &input)) { + return -1; + } + + if (input.token != SL_PP_IDENTIFIER) { strcpy(context->error_msg, "expected an identifier"); return -1; } - macro_name = input[*pi].data.identifier; + macro_name = input.data.identifier; /* First look for predefined macros. */ @@ -145,21 +140,18 @@ sl_pp_macro_expand(struct sl_pp_context *context, if (!mute && _out_number(context, state, context->line)) { return -1; } - (*pi)++; return 0; } if (macro_name == context->dict.___FILE__) { if (!mute && _out_number(context, state, context->file)) { return -1; } - (*pi)++; return 0; } if (macro_name == context->dict.___VERSION__) { if (!mute && _out_number(context, state, 110)) { return -1; } - (*pi)++; return 0; } @@ -175,7 +167,6 @@ sl_pp_macro_expand(struct sl_pp_context *context, return -1; } } - (*pi)++; return 0; } } @@ -187,7 +178,6 @@ sl_pp_macro_expand(struct sl_pp_context *context, if (!mute && _out_number(context, state, 1)) { return -1; } - (*pi)++; return 0; } } @@ -215,25 +205,26 @@ sl_pp_macro_expand(struct sl_pp_context *context, return -1; } } else if (!mute) { - if (sl_pp_process_out(state, &input[*pi])) { + if (sl_pp_process_out(state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } } - (*pi)++; return 0; } - (*pi)++; - if (macro->num_args >= 0) { - skip_whitespace(input, pi); - if (input[*pi].token != SL_PP_LPAREN) { + if (sl_pp_token_buffer_skip_white(tokens, &input)) { + return -1; + } + if (input.token != SL_PP_LPAREN) { strcpy(context->error_msg, "expected `('"); return -1; } - (*pi)++; - skip_whitespace(input, pi); + if (sl_pp_token_buffer_skip_white(tokens, &input)) { + return -1; + } + sl_pp_token_buffer_unget(tokens, &input); } if (macro->num_args > 0) { @@ -242,103 +233,85 @@ sl_pp_macro_expand(struct sl_pp_context *context, for (j = 0; j < (unsigned int)macro->num_args; j++) { struct sl_pp_process_state arg_state; - unsigned int i; int done = 0; unsigned int paren_nesting = 0; struct sl_pp_token_info eof; memset(&arg_state, 0, sizeof(arg_state)); - for (i = *pi; !done;) { - switch (input[i].token) { + while (!done) { + if (sl_pp_token_buffer_get(tokens, &input)) { + goto fail_arg; + } + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_COMMA: if (!paren_nesting) { if (j < (unsigned int)macro->num_args - 1) { done = 1; - i++; } else { strcpy(context->error_msg, "too many actual macro arguments"); - return -1; + goto fail_arg; } } else { - if (sl_pp_process_out(&arg_state, &input[i])) { + if (sl_pp_process_out(&arg_state, &input)) { strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + goto fail_arg; } - i++; } break; case SL_PP_LPAREN: paren_nesting++; - if (sl_pp_process_out(&arg_state, &input[i])) { - strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + if (sl_pp_process_out(&arg_state, &input)) { + goto oom_arg; } - i++; break; case SL_PP_RPAREN: if (!paren_nesting) { if (j == (unsigned int)macro->num_args - 1) { done = 1; - i++; } else { strcpy(context->error_msg, "too few actual macro arguments"); - return -1; + goto fail_arg; } } else { paren_nesting--; - if (sl_pp_process_out(&arg_state, &input[i])) { - strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + if (sl_pp_process_out(&arg_state, &input)) { + goto oom_arg; } - i++; } break; case SL_PP_IDENTIFIER: - if (sl_pp_macro_expand(context, input, &i, local, &arg_state, sl_pp_macro_expand_normal)) { - free(arg_state.out); - return -1; + sl_pp_token_buffer_unget(tokens, &input); + if (sl_pp_macro_expand(context, tokens, local, &arg_state, sl_pp_macro_expand_normal)) { + goto fail_arg; } break; case SL_PP_EOF: strcpy(context->error_msg, "too few actual macro arguments"); - return -1; + goto fail_arg; default: - if (sl_pp_process_out(&arg_state, &input[i])) { - strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + if (sl_pp_process_out(&arg_state, &input)) { + goto oom_arg; } - i++; } } - (*pi) = i; - eof.token = SL_PP_EOF; if (sl_pp_process_out(&arg_state, &eof)) { - strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + goto oom_arg; } *pmacro = sl_pp_macro_new(); if (!*pmacro) { - strcpy(context->error_msg, "out of memory"); - free(arg_state.out); - return -1; + goto oom_arg; } (**pmacro).name = formal_arg->name; @@ -346,47 +319,95 @@ sl_pp_macro_expand(struct sl_pp_context *context, formal_arg = formal_arg->next; pmacro = &(**pmacro).next; + + continue; + +oom_arg: + strcpy(context->error_msg, "out of memory"); +fail_arg: + free(arg_state.out); + goto fail; } } /* Right paren for non-empty argument list has already been eaten. */ if (macro->num_args == 0) { - skip_whitespace(input, pi); - if (input[*pi].token != SL_PP_RPAREN) { + if (sl_pp_token_buffer_skip_white(tokens, &input)) { + goto fail; + } + if (input.token != SL_PP_RPAREN) { strcpy(context->error_msg, "expected `)'"); - return -1; + goto fail; } - (*pi)++; } - for (j = 0;;) { - switch (macro->body[j].token) { - case SL_PP_NEWLINE: - if (sl_pp_process_out(state, ¯o->body[j])) { - strcpy(context->error_msg, "out of memory"); - return -1; - } - j++; - break; + /* XXX: This is all wrong, we should be ungetting all tokens + * back to the main token buffer. + */ + { + struct sl_pp_token_buffer buffer; - case SL_PP_IDENTIFIER: - if (sl_pp_macro_expand(context, macro->body, &j, actual_arg, state, behaviour)) { - return -1; - } - break; + /* Seek to the end. + */ + for (j = 0; macro->body[j].token != SL_PP_EOF; j++) { + } + j++; + + /* Create a context-less token buffer since we are not going to underrun + * its internal buffer. + */ + if (sl_pp_token_buffer_init(&buffer, NULL)) { + strcpy(context->error_msg, "out of memory"); + goto fail; + } - case SL_PP_EOF: - sl_pp_macro_free(actual_arg); - return 0; + /* Unget the tokens in reverse order so later they will be fetched correctly. + */ + for (; j > 0; j--) { + sl_pp_token_buffer_unget(&buffer, ¯o->body[j - 1]); + } - default: - if (!mute) { - if (sl_pp_process_out(state, ¯o->body[j])) { + /* Expand. + */ + for (;;) { + struct sl_pp_token_info input; + + sl_pp_token_buffer_get(&buffer, &input); + switch (input.token) { + case SL_PP_NEWLINE: + if (sl_pp_process_out(state, &input)) { strcpy(context->error_msg, "out of memory"); - return -1; + sl_pp_token_buffer_destroy(&buffer); + goto fail; + } + break; + + case SL_PP_IDENTIFIER: + sl_pp_token_buffer_unget(&buffer, &input); + if (sl_pp_macro_expand(context, &buffer, actual_arg, state, behaviour)) { + sl_pp_token_buffer_destroy(&buffer); + goto fail; + } + break; + + case SL_PP_EOF: + sl_pp_token_buffer_destroy(&buffer); + sl_pp_macro_free(actual_arg); + return 0; + + default: + if (!mute) { + if (sl_pp_process_out(state, &input)) { + strcpy(context->error_msg, "out of memory"); + sl_pp_token_buffer_destroy(&buffer); + goto fail; + } } } - j++; } } + +fail: + sl_pp_macro_free(actual_arg); + return -1; } diff --git a/src/glsl/pp/sl_pp_macro.h b/src/glsl/pp/sl_pp_macro.h index 3ad3438236a..2967baf3375 100644 --- a/src/glsl/pp/sl_pp_macro.h +++ b/src/glsl/pp/sl_pp_macro.h @@ -64,8 +64,7 @@ enum sl_pp_macro_expand_behaviour { int sl_pp_macro_expand(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int *pi, + struct sl_pp_token_buffer *tokens, struct sl_pp_macro *local, struct sl_pp_process_state *state, enum sl_pp_macro_expand_behaviour behaviour); diff --git a/src/glsl/pp/sl_pp_process.c b/src/glsl/pp/sl_pp_process.c index e2adc2a0215..6dcd0ab4015 100644 --- a/src/glsl/pp/sl_pp_process.c +++ b/src/glsl/pp/sl_pp_process.c @@ -31,15 +31,6 @@ #include "sl_pp_public.h" -static void -skip_whitespace(const struct sl_pp_token_info *input, - unsigned int *pi) -{ - while (input[*pi].token == SL_PP_WHITESPACE) { - (*pi)++; - } -} - int sl_pp_process_out(struct sl_pp_process_state *state, const struct sl_pp_token_info *token) @@ -68,12 +59,10 @@ sl_pp_process_out(struct sl_pp_process_state *state, int sl_pp_process(struct sl_pp_context *context, - const struct sl_pp_token_info *input, struct sl_pp_token_info **output) { - unsigned int i = 0; - int found_eof = 0; struct sl_pp_process_state state; + int found_eof = 0; memset(&state, 0, sizeof(state)); @@ -96,103 +85,113 @@ sl_pp_process(struct sl_pp_context *context, } while (!found_eof) { - skip_whitespace(input, &i); - if (input[i].token == SL_PP_HASH) { - i++; - skip_whitespace(input, &i); - switch (input[i].token) { + struct sl_pp_token_info input; + + if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) { + return -1; + } + if (input.token == SL_PP_HASH) { + if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) { + return -1; + } + switch (input.token) { case SL_PP_IDENTIFIER: { int name; int found_eol = 0; - unsigned int first; - unsigned int last; struct sl_pp_token_info endof; + struct sl_pp_token_peek peek; + int result; /* Directive name. */ - name = input[i].data.identifier; - i++; - skip_whitespace(input, &i); + name = input.data.identifier; - first = i; + if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) { + return -1; + } + sl_pp_token_buffer_unget(&context->tokens, &input); + + if (sl_pp_token_peek_init(&peek, &context->tokens)) { + return -1; + } while (!found_eol) { - switch (input[i].token) { + if (sl_pp_token_peek_get(&peek, &input)) { + sl_pp_token_peek_destroy(&peek); + return -1; + } + switch (input.token) { case SL_PP_NEWLINE: /* Preserve newline just for the sake of line numbering. */ - endof = input[i]; - i++; + endof = input; found_eol = 1; break; case SL_PP_EOF: - endof = input[i]; - i++; + endof = input; found_eof = 1; found_eol = 1; break; - - default: - i++; } } - last = i - 1; - if (name == context->dict._if) { - if (sl_pp_process_if(context, input, first, last)) { - return -1; + struct sl_pp_token_buffer buffer; + + result = sl_pp_token_peek_to_buffer(&peek, &buffer); + if (result == 0) { + result = sl_pp_process_if(context, &buffer); + sl_pp_token_buffer_destroy(&buffer); } } else if (name == context->dict.ifdef) { - if (sl_pp_process_ifdef(context, input, first, last)) { - return -1; - } + result = sl_pp_process_ifdef(context, peek.tokens, 0, peek.size - 1); } else if (name == context->dict.ifndef) { - if (sl_pp_process_ifndef(context, input, first, last)) { - return -1; - } + result = sl_pp_process_ifndef(context, peek.tokens, 0, peek.size - 1); } else if (name == context->dict.elif) { - if (sl_pp_process_elif(context, input, first, last)) { - return -1; + struct sl_pp_token_buffer buffer; + + result = sl_pp_token_peek_to_buffer(&peek, &buffer); + if (result == 0) { + result = sl_pp_process_elif(context, &buffer); + sl_pp_token_buffer_destroy(&buffer); } } else if (name == context->dict._else) { - if (sl_pp_process_else(context, input, first, last)) { - return -1; - } + result = sl_pp_process_else(context, peek.tokens, 0, peek.size - 1); } else if (name == context->dict.endif) { - if (sl_pp_process_endif(context, input, first, last)) { - return -1; - } + result = sl_pp_process_endif(context, peek.tokens, 0, peek.size - 1); } else if (context->if_value) { if (name == context->dict.define) { - if (sl_pp_process_define(context, input, first, last)) { - return -1; - } + result = sl_pp_process_define(context, peek.tokens, 0, peek.size - 1); } else if (name == context->dict.error) { - sl_pp_process_error(context, input, first, last); - return -1; + sl_pp_process_error(context, peek.tokens, 0, peek.size - 1); + result = -1; } else if (name == context->dict.extension) { - if (sl_pp_process_extension(context, input, first, last, &state)) { - return -1; - } + result = sl_pp_process_extension(context, peek.tokens, 0, peek.size - 1, &state); } else if (name == context->dict.line) { - if (sl_pp_process_line(context, input, first, last, &state)) { - return -1; + struct sl_pp_token_buffer buffer; + + result = sl_pp_token_peek_to_buffer(&peek, &buffer); + if (result == 0) { + result = sl_pp_process_line(context, &buffer, &state); + sl_pp_token_buffer_destroy(&buffer); } } else if (name == context->dict.pragma) { - if (sl_pp_process_pragma(context, input, first, last, &state)) { - return -1; - } + result = sl_pp_process_pragma(context, peek.tokens, 0, peek.size - 1, &state); } else if (name == context->dict.undef) { - if (sl_pp_process_undef(context, input, first, last)) { - return -1; - } + result = sl_pp_process_undef(context, peek.tokens, 0, peek.size - 1); } else { strcpy(context->error_msg, "unrecognised directive name"); - return -1; + result = -1; } } + sl_pp_token_peek_commit(&peek); + sl_pp_token_peek_destroy(&peek); + + if (result) { + return result; + } + if (sl_pp_process_out(&state, &endof)) { strcpy(context->error_msg, "out of memory"); return -1; @@ -203,21 +202,19 @@ sl_pp_process(struct sl_pp_context *context, case SL_PP_NEWLINE: /* Empty directive. */ - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } context->line++; - i++; break; case SL_PP_EOF: /* Empty directive. */ - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } - i++; found_eof = 1; break; @@ -228,36 +225,40 @@ sl_pp_process(struct sl_pp_context *context, } else { int found_eol = 0; + sl_pp_token_buffer_unget(&context->tokens, &input); + while (!found_eol) { - switch (input[i].token) { + if (sl_pp_token_buffer_get(&context->tokens, &input)) { + return -1; + } + + switch (input.token) { case SL_PP_WHITESPACE: /* Drop whitespace all together at this point. */ - i++; break; case SL_PP_NEWLINE: /* Preserve newline just for the sake of line numbering. */ - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } context->line++; - i++; found_eol = 1; break; case SL_PP_EOF: - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } - i++; found_eof = 1; found_eol = 1; break; case SL_PP_IDENTIFIER: - if (sl_pp_macro_expand(context, input, &i, NULL, &state, + sl_pp_token_buffer_unget(&context->tokens, &input); + if (sl_pp_macro_expand(context, &context->tokens, NULL, &state, context->if_value ? sl_pp_macro_expand_normal : sl_pp_macro_expand_mute)) { return -1; } @@ -265,12 +266,11 @@ sl_pp_process(struct sl_pp_context *context, default: if (context->if_value) { - if (sl_pp_process_out(&state, &input[i])) { + if (sl_pp_process_out(&state, &input)) { strcpy(context->error_msg, "out of memory"); return -1; } } - i++; } } } diff --git a/src/glsl/pp/sl_pp_process.h b/src/glsl/pp/sl_pp_process.h index 24311bab603..31defd911a3 100644 --- a/src/glsl/pp/sl_pp_process.h +++ b/src/glsl/pp/sl_pp_process.h @@ -53,9 +53,7 @@ sl_pp_process_undef(struct sl_pp_context *context, int sl_pp_process_if(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last); + struct sl_pp_token_buffer *input); int sl_pp_process_ifdef(struct sl_pp_context *context, @@ -71,9 +69,7 @@ sl_pp_process_ifndef(struct sl_pp_context *context, int sl_pp_process_elif(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last); + struct sl_pp_token_buffer *buffer); int sl_pp_process_else(struct sl_pp_context *context, @@ -109,9 +105,7 @@ sl_pp_process_extension(struct sl_pp_context *context, int sl_pp_process_line(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int first, - unsigned int last, + struct sl_pp_token_buffer *buffer, struct sl_pp_process_state *state); int diff --git a/src/glsl/pp/sl_pp_public.h b/src/glsl/pp/sl_pp_public.h index 9d0a08ca457..309a70c07ff 100644 --- a/src/glsl/pp/sl_pp_public.h +++ b/src/glsl/pp/sl_pp_public.h @@ -37,7 +37,8 @@ struct sl_pp_context; struct sl_pp_context * -sl_pp_context_create(void); +sl_pp_context_create(const char *input, + const struct sl_pp_purify_options *options); void sl_pp_context_destroy(struct sl_pp_context *context); @@ -70,13 +71,10 @@ sl_pp_context_cstr(const struct sl_pp_context *context, int sl_pp_version(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int *version, - unsigned int *tokens_eaten); + unsigned int *version); int sl_pp_process(struct sl_pp_context *context, - const struct sl_pp_token_info *input, struct sl_pp_token_info **output); #endif /* SL_PP_PUBLIC_H */ diff --git a/src/glsl/pp/sl_pp_token.c b/src/glsl/pp/sl_pp_token.c index d1abbd5257c..a7089787005 100644 --- a/src/glsl/pp/sl_pp_token.c +++ b/src/glsl/pp/sl_pp_token.c @@ -507,7 +507,7 @@ _tokenise_number(struct sl_pp_context *context, } -static int +int sl_pp_token_get(struct sl_pp_context *context, struct sl_pp_token_info *out) { @@ -809,20 +809,16 @@ sl_pp_token_get(struct sl_pp_context *context, int sl_pp_tokenise(struct sl_pp_context *context, - const char *input, - const struct sl_pp_purify_options *options, struct sl_pp_token_info **output) { struct sl_pp_token_info *out = NULL; unsigned int out_len = 0; unsigned int out_max = 0; - sl_pp_purify_state_init(&context->pure, input, options); - for (;;) { struct sl_pp_token_info info; - if (sl_pp_token_get(context, &info)) { + if (sl_pp_token_buffer_get(&context->tokens, &info)) { free(out); return -1; } diff --git a/src/glsl/pp/sl_pp_token.h b/src/glsl/pp/sl_pp_token.h index ba9834a9f24..a12b1934018 100644 --- a/src/glsl/pp/sl_pp_token.h +++ b/src/glsl/pp/sl_pp_token.h @@ -122,10 +122,12 @@ struct sl_pp_token_info { struct sl_pp_purify_options; +int +sl_pp_token_get(struct sl_pp_context *context, + struct sl_pp_token_info *out); + int sl_pp_tokenise(struct sl_pp_context *context, - const char *input, - const struct sl_pp_purify_options *options, struct sl_pp_token_info **output); #endif /* SL_PP_TOKEN_H */ diff --git a/src/glsl/pp/sl_pp_token_util.h b/src/glsl/pp/sl_pp_token_util.h new file mode 100644 index 00000000000..1685d243a5b --- /dev/null +++ b/src/glsl/pp/sl_pp_token_util.h @@ -0,0 +1,211 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#ifndef SL_PP_TOKEN_UTIL_H +#define SL_PP_TOKEN_UTIL_H + +#include +#include +#include "sl_pp_token.h" + + +struct sl_pp_context; + +/* + * A token buffer allows one to get and unget a token + * from a preprocessor context. + */ +struct sl_pp_token_buffer { + struct sl_pp_context *context; + unsigned int size; + unsigned int capacity; + struct sl_pp_token_info *tokens; +}; + +static int +sl_pp_token_buffer_init(struct sl_pp_token_buffer *buffer, + struct sl_pp_context *context) +{ + buffer->context = context; + buffer->size = 0; + buffer->capacity = 64; + buffer->tokens = malloc(buffer->capacity * sizeof(struct sl_pp_token_info)); + if (!buffer->tokens) { + return -1; + } + return 0; +} + +static void +sl_pp_token_buffer_destroy(struct sl_pp_token_buffer *buffer) +{ + free(buffer->tokens); +} + +static int +sl_pp_token_buffer_get(struct sl_pp_token_buffer *buffer, + struct sl_pp_token_info *out) +{ + /* Pop from stack first if not empty. */ + if (buffer->size) { + *out = buffer->tokens[--buffer->size]; + return 0; + } + + assert(buffer->context); + return sl_pp_token_get(buffer->context, out); +} + +static void +sl_pp_token_buffer_unget(struct sl_pp_token_buffer *buffer, + const struct sl_pp_token_info *in) +{ + /* Resize if needed. */ + if (buffer->size == buffer->capacity) { + buffer->capacity += 64; + buffer->tokens = realloc(buffer->tokens, + buffer->capacity * sizeof(struct sl_pp_token_info)); + assert(buffer->tokens); + } + + /* Push token on stack. */ + buffer->tokens[buffer->size++] = *in; +} + +static int +sl_pp_token_buffer_skip_white(struct sl_pp_token_buffer *buffer, + struct sl_pp_token_info *out) +{ + if (sl_pp_token_buffer_get(buffer, out)) { + return -1; + } + + while (out->token == SL_PP_WHITESPACE) { + if (sl_pp_token_buffer_get(buffer, out)) { + return -1; + } + } + + return 0; +} + + +/* + * A token peek allows one to get a number of tokens from a buffer + * and then either commit the operation or abort it, + * effectively ungetting the peeked tokens. + */ +struct sl_pp_token_peek { + struct sl_pp_token_buffer *buffer; + unsigned int size; + unsigned int capacity; + struct sl_pp_token_info *tokens; +}; + +static int +sl_pp_token_peek_init(struct sl_pp_token_peek *peek, + struct sl_pp_token_buffer *buffer) +{ + peek->buffer = buffer; + peek->size = 0; + peek->capacity = 64; + peek->tokens = malloc(peek->capacity * sizeof(struct sl_pp_token_info)); + if (!peek->tokens) { + return -1; + } + return 0; +} + +static void +sl_pp_token_peek_destroy(struct sl_pp_token_peek *peek) +{ + /* Abort. */ + while (peek->size) { + sl_pp_token_buffer_unget(peek->buffer, &peek->tokens[--peek->size]); + } + free(peek->tokens); +} + +static int +sl_pp_token_peek_get(struct sl_pp_token_peek *peek, + struct sl_pp_token_info *out) +{ + /* Get token from buffer. */ + if (sl_pp_token_buffer_get(peek->buffer, out)) { + return -1; + } + + /* Save it. */ + if (peek->size == peek->capacity) { + peek->capacity += 64; + peek->tokens = realloc(peek->tokens, + peek->capacity * sizeof(struct sl_pp_token_info)); + assert(peek->tokens); + } + peek->tokens[peek->size++] = *out; + return 0; +} + +static void +sl_pp_token_peek_commit(struct sl_pp_token_peek *peek) +{ + peek->size = 0; +} + +static int +sl_pp_token_peek_to_buffer(const struct sl_pp_token_peek *peek, + struct sl_pp_token_buffer *buffer) +{ + unsigned int i; + + if (sl_pp_token_buffer_init(buffer, NULL)) { + return -1; + } + for (i = peek->size; i > 0; i--) { + sl_pp_token_buffer_unget(buffer, &peek->tokens[i - 1]); + } + return 0; +} + +static int +sl_pp_token_peek_skip_white(struct sl_pp_token_peek *peek, + struct sl_pp_token_info *out) +{ + if (sl_pp_token_peek_get(peek, out)) { + return -1; + } + + while (out->token == SL_PP_WHITESPACE) { + if (sl_pp_token_peek_get(peek, out)) { + return -1; + } + } + + return 0; +} + +#endif /* SL_PP_TOKEN_UTIL_H */ diff --git a/src/glsl/pp/sl_pp_version.c b/src/glsl/pp/sl_pp_version.c index db06523749c..3c995b77501 100644 --- a/src/glsl/pp/sl_pp_version.c +++ b/src/glsl/pp/sl_pp_version.c @@ -33,21 +33,23 @@ int sl_pp_version(struct sl_pp_context *context, - const struct sl_pp_token_info *input, - unsigned int *version, - unsigned int *tokens_eaten) + unsigned int *version) { - unsigned int i = 0; + struct sl_pp_token_peek peek; unsigned int line = context->line; /* Default values if `#version' is not present. */ *version = 110; - *tokens_eaten = 0; + + if (sl_pp_token_peek_init(&peek, &context->tokens)) { + return -1; + } /* There can be multiple `#version' directives present. * Accept the value of the last one. */ for (;;) { + struct sl_pp_token_info input; int found_hash = 0; int found_version = 0; int found_number = 0; @@ -55,82 +57,101 @@ sl_pp_version(struct sl_pp_context *context, /* Skip whitespace and newlines and seek for hash. */ while (!found_hash) { - switch (input[i].token) { + if (sl_pp_token_peek_get(&peek, &input)) { + sl_pp_token_peek_destroy(&peek); + return -1; + } + + switch (input.token) { case SL_PP_NEWLINE: line++; - /* pass thru */ + break; + case SL_PP_WHITESPACE: - i++; break; case SL_PP_HASH: - i++; found_hash = 1; break; default: + sl_pp_token_peek_destroy(&peek); return 0; } } /* Skip whitespace and seek for `version'. */ while (!found_version) { - switch (input[i].token) { + if (sl_pp_token_peek_get(&peek, &input)) { + sl_pp_token_peek_destroy(&peek); + return -1; + } + + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_IDENTIFIER: - if (input[i].data.identifier != context->dict.version) { + if (input.data.identifier != context->dict.version) { + sl_pp_token_peek_destroy(&peek); return 0; } - i++; found_version = 1; break; default: + sl_pp_token_peek_destroy(&peek); return 0; } } + sl_pp_token_peek_commit(&peek); + /* Skip whitespace and seek for version number. */ while (!found_number) { - switch (input[i].token) { + if (sl_pp_token_buffer_get(&context->tokens, &input)) { + sl_pp_token_peek_destroy(&peek); + return -1; + } + + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_UINT: - *version = atoi(sl_pp_context_cstr(context, input[i].data._uint)); - i++; + *version = atoi(sl_pp_context_cstr(context, input.data._uint)); found_number = 1; break; default: strcpy(context->error_msg, "expected version number after `#version'"); + sl_pp_token_peek_destroy(&peek); return -1; } } /* Skip whitespace and seek for either newline or eof. */ while (!found_end) { - switch (input[i].token) { + if (sl_pp_token_buffer_get(&context->tokens, &input)) { + sl_pp_token_peek_destroy(&peek); + return -1; + } + + switch (input.token) { case SL_PP_WHITESPACE: - i++; break; case SL_PP_NEWLINE: line++; /* pass thru */ case SL_PP_EOF: - i++; - *tokens_eaten = i; context->line = line; found_end = 1; break; default: strcpy(context->error_msg, "expected end of line after version number"); + sl_pp_token_peek_destroy(&peek); return -1; } }