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-rw-r--r--src/generator.c60
-rw-r--r--src/generator.h8
-rw-r--r--src/tpc.y225
3 files changed, 158 insertions, 135 deletions
diff --git a/src/generator.c b/src/generator.c
index 004e559..e547a23 100644
--- a/src/generator.c
+++ b/src/generator.c
@@ -96,8 +96,19 @@ void gen_ifelse_end(int idx) {
96 96
97// ----- OPERATORS ----- 97// ----- OPERATORS -----
98 98
99void gen_assign(int ident, Scope scope) { 99int gen_assign(const char ident[], Scope scope) {
100 // TODO: what's "$$" and how do we extract it? 100 const char instr_fmt[] = "pop QWORD [rbp - %d] ;%s\n";
101
102 switch (scope) {
103 case GLOBAL:
104 printf(instr_fmt, glo_get_addr(ident), ident);
105 return glo_lookup(ident);
106 case LOCAL:
107 printf(instr_fmt, loc_get_addr(ident), ident);
108 return loc_lookup(ident);
109 default:
110 exit(1);
111 }
101} 112}
102 113
103void gen_or(int left, int right, int idx) { 114void gen_or(int left, int right, int idx) {
@@ -206,3 +217,48 @@ void gen_divstar(char op, int left, int right) {
206 } 217 }
207} 218}
208 219
220int gen_signed_expr(char op, int type) {
221 switch (op) {
222 case '+':
223 printf(";+F\n");
224 break;
225 case '-':
226 printf(";-F\npop rdx\nxor rax,rax\nsub rax,rdx\npush rax\n");
227 break;
228 default:
229 exit(1);
230 }
231
232 return type;
233}
234
235int gen_negate_expr(int type) {
236 printf(";!F\npop rax\nxor rax,1\npush rax\n");
237 return type;
238}
239
240int gen_value(const char ident[], Scope scope) {
241 switch (scope) {
242 case GLOBAL:
243 printf("push QWORD [rbp - %d] ;%s\n", glo_get_addr(ident), ident);
244 return glo_lookup(ident);
245 case LOCAL:
246 printf("push QWORD [rbp - %d] ;%s\n", loc_get_addr(ident), ident);
247 return loc_lookup(ident);
248 default:
249 exit(1);
250 }
251}
252
253int gen_num(int value, Scope scope) {
254 if (scope == LOCAL) printf("push %d\n", value); // TODO: remove if?
255 // stored for the semantic analysis.
256
257 return INT;
258}
259
260int gen_char(int value, Scope scope) {
261 if(scope == LOCAL) printf("push %d\n", value); // TODO: remove if?
262 return CHAR;
263}
264
diff --git a/src/generator.h b/src/generator.h
index 17ea662..c907f66 100644
--- a/src/generator.h
+++ b/src/generator.h
@@ -23,7 +23,7 @@ void gen_if_start(int idx);
23void gen_if_end(int idx); 23void gen_if_end(int idx);
24void gen_ifelse_end(int idx); 24void gen_ifelse_end(int idx);
25 25
26void gen_assign(int ident, Scope scope); 26int gen_assign(const char ident[], Scope scope);
27void gen_or(int left, int right, int idx); 27void gen_or(int left, int right, int idx);
28void gen_and(int left, int right, int idx); 28void gen_and(int left, int right, int idx);
29void gen_eq(const char op[], int left, int right, int idx); 29void gen_eq(const char op[], int left, int right, int idx);
@@ -31,4 +31,10 @@ void gen_order(const char op[], int left, int right, int idx);
31void gen_addsub(char op, int left, int right); 31void gen_addsub(char op, int left, int right);
32void gen_divstar(char op, int left, int right); 32void gen_divstar(char op, int left, int right);
33 33
34int gen_signed_expr(char op, int type);
35int gen_negate_expr(int type);
36int gen_value(const char ident[], Scope scope);
37int gen_num(int value, Scope scope);
38int gen_char(int value, Scope scope);
39
34#endif 40#endif
diff --git a/src/tpc.y b/src/tpc.y
index 12ff20d..17b8718 100644
--- a/src/tpc.y
+++ b/src/tpc.y
@@ -50,167 +50,128 @@ static int num_if = 0;
50 50
51%% 51%%
52Prog: { gen_prologue(); } 52Prog: { gen_prologue(); }
53 DeclConsts DeclVars DeclFoncts { gen_const_declaration(); } 53 DeclConsts DeclVars DeclFoncts { gen_const_declaration(); }
54 ; 54;
55DeclConsts: 55DeclConsts:
56 DeclConsts CONST ListConst ';' 56 DeclConsts CONST ListConst ';'
57 | 57|
58 ; 58;
59ListConst: 59ListConst:
60 ListConst ',' IDENT '=' Litteral 60 ListConst ',' IDENT '=' Litteral
61 | IDENT '=' Litteral 61| IDENT '=' Litteral
62 ; 62;
63Litteral: 63Litteral:
64 NombreSigne 64 NombreSigne
65 | CARACTERE 65| CARACTERE
66 ; 66;
67NombreSigne: 67NombreSigne:
68 NUM 68 NUM
69 | ADDSUB NUM 69| ADDSUB NUM
70 ; 70;
71DeclVars: 71DeclVars:
72 DeclVars TYPE Declarateurs ';' 72 DeclVars TYPE Declarateurs ';'
73 | 73|
74 ; 74;
75Declarateurs: 75Declarateurs:
76 Declarateurs ',' Declarateur { gen_declaration($<ident>3, $<type>0, scope); } 76 Declarateurs ',' Declarateur { gen_declaration($<ident>3, $<type>0, scope); }
77 | Declarateur { gen_declaration($<ident>1, $<type>0, scope); } 77| Declarateur { gen_declaration($<ident>1, $<type>0, scope); }
78 ; 78;
79Declarateur: 79Declarateur:
80 IDENT 80 IDENT
81 | IDENT '[' NUM ']' 81| IDENT '[' NUM ']'
82 ; 82;
83DeclFoncts: 83DeclFoncts:
84 DeclFoncts DeclFonct 84 DeclFoncts DeclFonct
85 | DeclFonct 85| DeclFonct
86 ; 86;
87DeclFonct: 87DeclFonct:
88 EnTeteFonct { scope = LOCAL; } 88 EnTeteFonct { scope = LOCAL; }
89 Corps { scope = GLOBAL; } 89 Corps { scope = GLOBAL; }
90 ; 90;
91EnTeteFonct: 91EnTeteFonct:
92 TYPE IDENT '(' Parametres ')' 92 TYPE IDENT '(' Parametres ')'
93 | VOID IDENT '(' Parametres ')' 93| VOID IDENT '(' Parametres ')'
94 ; 94;
95Parametres: 95Parametres:
96 VOID 96 VOID
97 | ListTypVar 97| ListTypVar
98 ; 98;
99ListTypVar: 99ListTypVar:
100 ListTypVar ',' TYPE IDENT { gen_declaration($<ident>4, $<type>3, scope); } 100 ListTypVar ',' TYPE IDENT { gen_declaration($<ident>4, $<type>3, scope); }
101 | TYPE IDENT { gen_declaration($<ident>2, $<type>1, scope); } 101| TYPE IDENT { gen_declaration($<ident>2, $<type>1, scope); }
102 ; 102;
103Corps: 103Corps:
104 '{' DeclConsts DeclVars SuiteInstr '}' 104 '{' DeclConsts DeclVars SuiteInstr '}'
105 ; 105;
106SuiteInstr: 106SuiteInstr:
107 SuiteInstr Instr 107 SuiteInstr Instr
108 | 108|
109 ; 109;
110Instr: 110Instr:
111 Exp ';' 111 Exp ';'
112 | ';' 112| ';'
113 | RETURN Exp ';' 113| RETURN Exp ';'
114 | RETURN ';' 114| RETURN ';'
115 | READE '(' IDENT ')' ';' { gen_read($<ident>3, scope); } 115| READE '(' IDENT ')' ';' { gen_read($<ident>3, scope); }
116 | READC '(' IDENT ')' ';' { gen_read($<ident>3, scope); } 116| READC '(' IDENT ')' ';' { gen_read($<ident>3, scope); }
117 | PRINT '(' Exp ')' ';' { gen_print();} 117| PRINT '(' Exp ')' ';' { gen_print();}
118 | IF '(' Exp IfHandling')' Instr { gen_if_label($<num>4); } 118| IF '(' Exp IfHandling')' Instr { gen_if_label($<num>4); }
119 | IF '(' Exp IfHandling')' Instr ELSE IfEndHandling Instr IfElseEndHandling 119| IF '(' Exp IfHandling')' Instr ELSE IfEndHandling Instr IfElseEndHandling
120 | WHILE '(' Exp ')' Instr 120| WHILE '(' Exp ')' Instr
121 | '{' SuiteInstr '}' 121| '{' SuiteInstr '}'
122 ; 122;
123IfHandling: { gen_if_start($<num>$ = num_if++); }; 123IfHandling: { gen_if_start($<num>$ = num_if++); };
124IfEndHandling: { gen_if_end($<num>-3); }; 124IfEndHandling: { gen_if_end($<num>-3); };
125IfElseEndHandling: { gen_ifelse_end($<num>-5); }; 125IfElseEndHandling: { gen_ifelse_end($<num>-5); };
126Exp: 126Exp:
127 LValue '=' Exp { /* TODO: extract this into func */ 127 LValue '=' Exp { $$ = gen_assign($<ident>1, scope); }
128 if(scope == GLOBAL){ 128| EB
129 $$ = glo_lookup($<ident>1); 129;
130 printf("pop QWORD [rbp - %d] ;%s\n",glo_get_addr($<ident>1),$<ident>1);
131 }
132 else {
133 $$ = loc_lookup($<ident>1);
134 printf("pop QWORD [rbp - %d] ;%s\n",loc_get_addr($<ident>1),$<ident>1);
135 }
136 }
137 | EB
138 ;
139EB: 130EB:
140 EB OR TB { gen_or($1, $3, num_label++); } 131 EB OR TB { gen_or($1, $3, num_label++); }
141 | TB 132| TB
142 ; 133;
143TB: 134TB:
144 TB AND FB { gen_and($1, $3, num_label++); } 135 TB AND FB { gen_and($1, $3, num_label++); }
145 | FB 136| FB
146 ; 137;
147FB: 138FB:
148 FB EQ M { gen_eq($2, $1, $3, num_label++); } 139 FB EQ M { gen_eq($2, $1, $3, num_label++); }
149 | M 140| M
150 ; 141;
151M: 142M:
152 M ORDER E { gen_order($2, $1, $3, num_label++); } 143 M ORDER E { gen_order($2, $1, $3, num_label++); }
153 | E 144| E